Question

How can I count the number of occurrences in a C string of / ?

I can do this:

int countSlash(char str[])
{
    int count = 0, k = 0;
    while (str[k] != '\0')
    {
          if (str[k] == '/')
              count++;
          k++;
    }
    return count;
}

But this is not an elegant way; any suggestions on how to improve it?

Answer 1

strchr would make a smaller loop:

ptr = str;

while ((ptr = strchr(ptr '/')) != NULL)
    count++, ptr++;

I should add that I don’t endorse brevity for brevity’s sake, and I’ll always opt for the clearest expression, all other things being equal. I do find the strchr loop more elegant, but the original implementation in the question is clear and lives inside a function, so I don’t prefer one over the other, so long as they both pass unit tests.